You can find files used for the current version of Sexuality IAT on PI Australia site.
For the IAT task,
Good words are: "Happy", "Wonderful", "Love", "Pleasure", "Peace", "Joy" "Glorious", and "Laughter"; Bad words are: "Hurt", "Agony", "Evil", "Nasty" "Awful", "Terrible", "Horrible", and "Failure" Gay men stimuli are: word "Gay" and "Homosexual", and image "05_GAY.jpg" and "14_gay.jpg"; Lesbian stimuli are: word "Lesbian" and "Homosexual", and image "07_lesbian.jpg" and "15_lesbian.jpg"; Straight stimuli are: word "Straight" and "Heterosexual", and image "06_hetero.jpg" and "13_hetero.jpg".
The experiment procedure has been changed over years. You may contact Project Implicit at admin@projectimplicit.net for the previous versions.